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http://www.vetmed.vt.edu/education/curriculum/vm8054/eye/rhodopsn.htm here's something that might help, . My thinking is that its important as the fact that it quick responds to very low amounts of light, also if you think of the colour spectrum, violet light is the highest frequency we can...

this was an exam question last year - 2 suggestions make two trays of dirt and get people to walk in one, or another method in the field look at two areas one of which is compacted - pretty easy to find in a school since students tend to walk off the paths a lot !!! but you can also try parks...

Re: HELP : ??Use available evidence to analyse the links between gene expression and conjuctivitis is my first thought- obvious infection, pink eye and mucous in the eye and highly infectious- just ask any child care worker !!!!

thanks you and well put !

just to get you started, they might expect you to know that the heterozygous form of sinkle cell anemia, in africa, is resistance to malaria. Also, a lot of poeple don't realise that beta thalassemia , in the mediterrean work the same way. both these disease are a mutation that if you are a...

dont panic too much it depends on how you phrase the investigation. If the hypothesis is that air is not enough to make the broth grow bacteria, then the control is the normal flask, and the test is the swam neck, although its true you could have three flasks and have another control with...

effectiveness- since we have not had any instances of anthrax and other famous diseases, then you might say its pretty good, although we have had some minor outbrakes nothing to the level of say mad cow in england, where thousands of animals had to be put down

there are lots of example of this in everyday life too, eg tanning in people not expressed if not exposed to sunlight.., bonsia plants dont show true height is pruned repeatedly etc. but stick to the text book examples to be safe.. there's a scishow video in this topic too on you-tube

there are no pathogens in US because the plant isn't naturally there, so no species have evolved there that eat it, or live in it....... this is a basic idea so you need to aplly your knowledge a bit more

I think its like this: In homeostatis the body keeps the conditions within a narrow range eg as in humans, but the enantiostasis, like invertebrate sea creatures, change their bodies's chemistry so that they can function in the new conditions. So humans maintain the same conditions but the...

don't forget they want you know about the scientist - dr ronald ross- and what he did to prove the causes of malaria

look him on wikipedia and you'll get a feeling about him- so its much easier to remember him if you can imagine hom as a real person. he was australian, for starters and sounds like a real " sheldon -type" if you're a big bang theory fan. He did major work with understanding how immunity worked...

Dear All, I know you are all madly revising for your trials, so here is some advice from a teacher . I found these great videos on youtube and if you havent seen them before, enjoy! Look up "crash course biology" on youtube and you'll get Hank Green giving great summaries of the excretory...

Hi, I got my friend to do the survey, but i do think your survey needs work. This survey is really for someone who was a teenage mum but you dont ask if they were a teenage mum and when this was. After all, being a teenage mum is more unusual than it once was, say in 1950's. perhaps you should...

Look at past paper examiners comments- they tell you what students did that got the top marks and also give you clues about where the examiners thought they needed to test again. for instance, last year too many physics students didnt do a line of best fit etc so i'd bet there will be a graphing...

reading it out aloud may also help. Colour coding also works for memorising formula!!

The program is available on line, so check it out and decide for yourself. These things often are good just to get you out of the class room and you meet other like minded people. Actually, i'm presenting a session on saturday, as I am a teacher. if you dont want to miss a day of school - with...

Hi, really it depends on how competitive the others in your class are. You seem to be doing some very difficult subjects, which can help. I would just keep plodding along, as your HSC marks do represent 50% of your atar. Perhaps you should get a tutor- if you can improve your HSC marks a bit...